WELL DETAILED VERIFIED ANSWERS|GRADED A+|NEWEST
Water molecules form hydrogen bonds because water is - ANSWER Polar
Water molecules binding to each other is called _______; water molecules binding to other
molecules is called _______. - ANSWER Cohesion; adhesion
Water molecules within these cells will also bind to each other. What is this called? - AN-
SWER Cohesion
Water can bind to the walls of these cells because they are _____ When water binds to the
walls of the cells, this is called ________ - ANSWER Polar; adhesion
Dissolving sugar in water makes a _______. The sugar is the _____ and the water is the
_____ - ANSWER Solution; solute; solvent
As water moves up the plant, it carries matter with it (such as nutrients and some hor-
mones). What are these materials called? - ANSWER Solutes
What characteristic of water allows a paperclip to float on the surface of the water. - AN-
SWER Surface tension
Why does mercury (Hg) not travel as far up the capillary tube as water does? - ANSWER
Mercury is not as adhesive as water
If the plant gets too dry, the water column can break. This creates an air bubble in the xylem.
What happens to the water when the air bubble forms? - ANSWER The water is still ad-
hering to the xylem walls, but the water column is no longer continuous.
1
, Explain why plants produce larger cells during wet seasons. - ANSWER These cells can
transport more water.
Explain why plants produce smaller cells during dry seasons. - ANSWER The smaller cells
are more resistant to air bubbles.
Organic molecules take many different shapes. This is because: - ANSWER Carbon can
form up to four covalent bonds with other molecules, allowing for a variety of structures
Which of the following molecules might be broken down (hydrolyzed) to produce simple
sugars? Select all that apply; more than one is correct. - ANSWER Maltose (a disaccha-
ride), cellulose, starch
Nonpolar molecules that lack highly electronegative atoms such as oxygen are - ANSWER
hydrophobic
Which molecule is abundant in seeds and is easily digested to yield glucose? - ANSWER
Starch
Ionic substances and polar molecules are _____ because they dissolve other polar molecules
or molecules with polar functional groups like hydroxyl groups. - ANSWER Hydrophillic
Nonpolar molecules are ______ because they usually contain many carbon hydrogen bonds
(C-H). - ANSWER hydrophobic
_______ is the most abundant organic molecule on planet Earth. It is a polysaccharide that is
used as a structural material in the cell walls of plants. You can get it out of grass, wood, old
newspapers, and crop byproducts. - ANSWER Cellulose
2
Water molecules form hydrogen bonds because water is - ANSWER Polar
Water molecules binding to each other is called _______; water molecules binding to other
molecules is called _______. - ANSWER Cohesion; adhesion
Water molecules within these cells will also bind to each other. What is this called? - AN-
SWER Cohesion
Water can bind to the walls of these cells because they are _____ When water binds to the
walls of the cells, this is called ________ - ANSWER Polar; adhesion
Dissolving sugar in water makes a _______. The sugar is the _____ and the water is the
_____ - ANSWER Solution; solute; solvent
As water moves up the plant, it carries matter with it (such as nutrients and some hor-
mones). What are these materials called? - ANSWER Solutes
What characteristic of water allows a paperclip to float on the surface of the water. - AN-
SWER Surface tension
Why does mercury (Hg) not travel as far up the capillary tube as water does? - ANSWER
Mercury is not as adhesive as water
If the plant gets too dry, the water column can break. This creates an air bubble in the xylem.
What happens to the water when the air bubble forms? - ANSWER The water is still ad-
hering to the xylem walls, but the water column is no longer continuous.
1
, Explain why plants produce larger cells during wet seasons. - ANSWER These cells can
transport more water.
Explain why plants produce smaller cells during dry seasons. - ANSWER The smaller cells
are more resistant to air bubbles.
Organic molecules take many different shapes. This is because: - ANSWER Carbon can
form up to four covalent bonds with other molecules, allowing for a variety of structures
Which of the following molecules might be broken down (hydrolyzed) to produce simple
sugars? Select all that apply; more than one is correct. - ANSWER Maltose (a disaccha-
ride), cellulose, starch
Nonpolar molecules that lack highly electronegative atoms such as oxygen are - ANSWER
hydrophobic
Which molecule is abundant in seeds and is easily digested to yield glucose? - ANSWER
Starch
Ionic substances and polar molecules are _____ because they dissolve other polar molecules
or molecules with polar functional groups like hydroxyl groups. - ANSWER Hydrophillic
Nonpolar molecules are ______ because they usually contain many carbon hydrogen bonds
(C-H). - ANSWER hydrophobic
_______ is the most abundant organic molecule on planet Earth. It is a polysaccharide that is
used as a structural material in the cell walls of plants. You can get it out of grass, wood, old
newspapers, and crop byproducts. - ANSWER Cellulose
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